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Wyszukujesz frazę "type II" wg kryterium: Temat


Wyświetlanie 1-4 z 4
Tytuł:
Design of Supply Chain Network to Reduce Impacts of Damages during Shipping
Autorzy:
Abushaega, Mastoor M.
Daehy, Yahya H.
Alghamdi, Saleh Y.
Krishnan, Krishna K.
Khamaj, Abdulrahman
Powiązania:
https://bibliotekanauki.pl/articles/1841416.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
supply chain network
damage recovery scenarios
closed loop supply chain
type I errors
type II errors
Opis:
Recently, the expand of industrial market has led to have long supply chain network. During the long shipment, the probability of having damaged products is likely to occur. The probability of having damaged products is different between stages and that could lead to higher percentage of damaged products when arrived at retailers. Many companies have rejected the entire shipment because the damaged product percentage was higher than that agreed on. Decision-makers have tried to reduce the percentage of damaged products that happened because the transit, loading unloading the shipment, and natural disasters. Companies started to implement recovery centers in the supply chain network in order to return their system steady statues. Recovery models have been developed in this paper to reduce the damaged percentage at minimum costs to do so. Results show that the possibility of implementing an inspection unit and a recovery centers in the system before sending the entire shipment to the retailer based on examining a sample size that has been selected randomly from the shipment and the minimum cost of committing type I and type II errors. Designing a methodology to minimize the total cost associated with the supply chain system when there is a possibility of damage occurring during shipping is the objective of this research.
Źródło:
Management and Production Engineering Review; 2021, 12, 2; 17-26
2080-8208
2082-1344
Pojawia się w:
Management and Production Engineering Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Measurements of low frequency noise of infrared photo-detectors with transimpedance detection system
Autorzy:
Ciura, Ł.
Kolek, A.
Gawron, W.
Kowalewski, A.
Stanaszek, D.
Powiązania:
https://bibliotekanauki.pl/articles/221094.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
1/f noise
infrared detectors
nBn structure
HgCdTe heterostructures
noise measurements
transimpedance detection system
type II InAs/GaSb superlattice
Opis:
The paper presents the method and results of low-frequency noise measurements of modern mid-wavelength infrared photodetectors. A type-II InAs/GaSb superlattice based detector with nBn barrier architecture is compared with a high operating temperature (HOT) heterojunction HgCdTe detector. All experiments were made in the range 1 Hz - 10 kHz at various temperatures by using a transimpedance detection system, which is examined in detail. The power spectral density of the nBn’s dark current noise includes Lorentzians with different time constants while the HgCdTe photodiode has more uniform 1/f - shaped spectra. For small bias, the low-frequency noise power spectra of both devices were found to scale linearly with bias voltage squared and were connected with the fluctuations of the leakage resistance. Leakage resistance noise defines the lower noise limit of a photodetector. Other dark current components give raise to the increase of low-frequency noise above this limit. For the same voltage biasing devices, the absolute noise power densities at 1 Hz in nBn are 1 to 2 orders of magnitude lower than in a MCT HgCdTe detector. In spite of this, low-frequency performance of the HgCdTe detector at ~ 230K is still better than that of InAs/GaSb superlattice nBn detector.
Źródło:
Metrology and Measurement Systems; 2014, 21, 3; 461-472
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mid-wave InAs/GaSb superlattice barrier infrared detectors with nBnN and pBnN design
Autorzy:
Gomółka, E.
Markowska, O.
Kopytko, M.
Kowalewski, A.
Martyniuk, P.
Rogalski, A.
Rutkowski, J.
Motyka, M.
Krishna, S.
Powiązania:
https://bibliotekanauki.pl/articles/201992.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
InAs/GaSb type-II superlattices
infrared detectors
barrier detectors
nBn detector
p-i-n detector
InAs
GaSb
detektory podczerwieni
detektor bariery
detektor nBn
detektory p-i-n
Opis:
We present an investigation of optical and electrical properties of mid-wavelength infrared (MWIR) detectors based on InAs/GaSb strained layer superlattices (SLs) with nBnN and pBnN design. The temperature-dependent behavior of the bandgap was investigated on the basis of absorption measurements. A 50% cut-off wavelength of around 4.5 μm at 80 K and increase of up to 5.6 μm at 290 K was found. Values of Varshni parameters, zero temperature bandgap E0 and empirical coefficients α and β were extracted. Arrhenius plots of dark currents of nBnN and pBnN detectors were compared with the p-i-n design. Dark current density reduction in nBnN and pBnN detectors is observed in comparison to the p-i-n device. This shows a suppression of Shockley-Read-Hall (SRH) processes by means of introducing barrier architecture.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2018, 66, 3; 317-323
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The regulatory role of AtDeg5 chloroplast protease in chronological progression of principal growth stages in Arabidopsis thaliana plants
Autorzy:
Baranek, M.
Lucinski, R.
Jackowski, G.
Powiązania:
https://bibliotekanauki.pl/articles/80598.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
conference
serine-type protease
chymotrypsin
thylakoid membrane
photosystem II
protease
chloroplast
Arabidopsis thaliana
ontogenesis
growth stage
Źródło:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2013, 94, 3
0860-7796
Pojawia się w:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-4 z 4

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